Hey!! ^x^
I hope I can help some people with my achievement guide! This game is great, it needed one! I tried to list all achievements in a chronological order, to make it easy to follow :3

1) No Escape..
(You tried to fight it but there was no escape..)
→ Chapter 1 – Don't let the Cats in
Right at the start of the game, you need to go to the other room in Angies apartment, before you hang yourself with the rope.

2) Treasure Hunt
(You found a treasure in the most unusual of places..)
→ Chapter 1 - Don't let the Cats in
If you talked to Omar at Burnhouse Lane (Kebab Guy) he will give you a toilet key. Open both toilet doors, go to the Clockmuseum, grab the yellow toilet glove, go back to the toilets and grab in each toilet with the glove. In one toilet, you will get the cat treasure, which you can later put on your shelf to get Mr. Grays Power twice.

3) Jumping Angie
(You dashed 25 times)
You get the dash in Chapter 1 and till' then you can simply spam it all 5 seconds to get this achievement. (You can get it in every chapter)

4) Honour The D(e)ad
(Secret Achievement)
You need to take the flower in Chapter 2 – Little Lamb eats the Wolf next to the bench, where Ciaran's caravan stands. Ciaran asks you, if you could bring him wine for the meal. Keep the flower.
Then in Chapter 3 – These Woods are Dark, you have to put the flower at the grave from Walter Green.

5) Feeding Time
(You served fresh meat to your feline friend from Burnhouse Lane...)
→ Chapter 2 - Little Lamb eats the Wolf
At the end at Chapter 2 the burned cat will ask you, if you would like to kill Rob. Then answer „I did enough. He's all yours now.“ The burned cat will then kill Rob.

6) The Execution
(Sometimes the best solution is to take matters into your own hands..)
→ Chapter 2 - Little Lamb eats the Wolf
It's the same as „Feeding Time“ BUT you have to keep one bullet left to kill Rob by yourself. Answer to the cat „ It'll be my pleasure..“

7) First Prize
(You won Ciaran's shooting game and got the first prize)
→ Chapter 3 - These Woods Are Dark
Before you go into the woods, play with Ciaran his shooting game and shoot all 5 bottles.

8) A Brush With Death
(You helped Aarno survive the night)
→ Chapter 3 – These Woods are Dark
Perfect guide exists already from"The Flying Red Robot"

9) Splashed
(You got splashed by a kid jumping in puddles..)
→ Chapter 4 – Bloody Mary
Right when you arrive Honiton, a kid with a yellow raincoat plays in the rain. Just try to walk into the puddle, when the kid jumps into it.

10) What Remains Of David Underseat
(You found the remains of David's body..)
→ Chapter 4 – Bloody Mary
You have to go with Angie in the basement, after Mary killed the two detectives.

11) Off To Pig Heaven
(You sent Jeremy off to pig heaven..)
→ Chapter 4 – Bloody Mary
Before you go upstairs to the attic, where Mary went to get the needle, go upstairs to Jeremy. You can basicially kick him, he will fall into the hole and dies.

12) Hand Cannon
(You found a Desert Eagle..)
→ Chapter 4 - Bloody Mary
If Bloody Mary went to the attic to get a needle, follow her, beat her and take the key from her corpse and open the suitcase at the attic.

13) The Wall Between Us
(You tried to go back to Jenny but there was already a wall between you)
→ Chapter 5 - The Valley of Many Noises
Go to the basement, where Jenny waits already for you. After your argument with Jenny (because of the hidden door), Angie walk by herself to the right. Then simply walk back to the left, where you talked to Jenny. There will be now a wall.

14) The Goddess Of Axe
(You killed the creature in Poisoned Lake without Bloody Mary's help.)
→ Chapter 5 - The Valley of Many Noises
You have to kill the „Sculpture“ or whatever you named him by yourself and with the axe. If you have a Desert Eagle bullet, you can use it now (if you want). The fight will took a little time, but it's makeable.
Hint: Let the creature go near you, to hit him with the axe good.

15) Fast Runner
(You killed the faceless creature as Mary before it lured you into a trap..)
→ Chapter 5 - The Valley of Many Noises
Let the revived Mary kill the „Sculpture“ or whatever you named this creature, with her chainsaw.
You have to be very fast to kill him, before he trapped you. Maybe it need some tries, but it's easy.

16) A Varied Diet
(You served kebab, cupcake, beer, sandwich and a lump of frozen lamb to Mr Fox..)
→ Chapter 6 – Mr. Fox
Warning: When you do this achievement, you can NOT get the golden ending.
When you have to feed Mr. Fox, be sure that you kept the Kebab and the Cupcake. So don't give them to Ciaran.
You get the Kebab in Chapter 1 – Don't let the Cats in, from Omar (the Kebab guy), when you ask him about his name and later thank him with his name (Omar). If you don't ask him about his name, you can't get the Kebab!
You can get the cupcake in Chapter 2 – Little Lamb eats the Wolf. After you get the cellar key, you can open all the locked doors in the church. In one cell stands a fridge, (I think it was the very right door) where the cupcake is inside. Keep these things till' Chapter 6, to feed Mr. Fox with it.
The beer, sandwich and a lump of frozen lamb are in Chapter 6. You just need to pick them up and give all to Mr. Fox, so he have a nice meal.

17) Mmm... Coffee...
(You offered a cup of coffee to a friend..)
→ Chapter 6 – Mr. Fox
When you enter the coffee shop, to get some milk for the cats, make an extra cup of coffee. You can give this cup to Mitzi.

18) Gen Rush
(You fixed the generator without a single failed skillcheck!)
→ Chapter 7 – The Lab
You can save before you try to get this achievement, in case you fail.
Just press 3x E at the right time, without fail one of them, to gain this achievement.

19) Firestarter
(Secret)
→ Chapter 7 – The Lab
(After the fight with the giant spider)
After you pick up the axe, combine it with the fabric. Then go to the oil tank and hit it. Now you have a burning axe. Hit the oil tank again with your torch and it will start to burn.

20) The Mask
(You got Walter Green's mask back..)
→ Chapter 7 – The Lab
Right where you get the achievement „Firestarter“, run to the left where Angie said something about to hear some music. Dash against the wall and burn up the monster flesh with your torch. Behind the flesh is a cell, where you reunite with Mitzi again. After a little talk, she will give you Walter Green's mask. (You need this item for the golden ending.)

21) I Only Smoke When I'm Drunk
(Secret)
→ Chapter 7 – The Lab
Give the „Special Cigarette“ to Jenny, when you all sit on the kitchen table and talk. First she will refuse it, but you can change her mind. (This will achieve an ending.)

22) The Last Cigarette
(Secret)
→ Chapter 7 – The Lab
Don't give the „Special Cigarette“ to anyone. Smoke it by yourself. (This will achieve an ending.)

23) Golden Ending
(You achieved the Golden Ending!)

For the golden ending you need:

1. The Doner Kebab from Omar
2. The Cupcake from the cell of the church
3. You have to give them to Ciaran, when the game gives you the chance
4. In general, be nice and kind to Ciaran (Then he comes right in time to save Aarno in Chapter 3)
5. You have to make George at least one sandwich that he'd enjoy during the whole game (Strawberry Jam or Ham + Mustard)
6. You need the 2nd prize from Ciaran at his shooting game (The little sheep)
7. Put the sheep at the next Chapter on the shelf (Chapter 4)
8. Save Aarno
9. Walter Green's Mask. You have to give the mask at the end of the game to Aarno
10. Give your „Special Cigarette“ to one of „The Boys“, when he's about to die

Finish Chapter 1 - 7 for Achievement 24 - 30

Lillya~